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Full text of "IS 15573: Polyaluminium Chloride"

**************** 



*■ fe^K 




Disclosure to Promote the Right To Information 

Whereas the Parliament of India has set out to provide a practical regime of right to 
information for citizens to secure access to information under the control of public authorities, 
in order to promote transparency and accountability in the working of every public authority, 
and whereas the attached publication of the Bureau of Indian Standards is of particular interest 
to the public, particularly disadvantaged communities and those engaged in the pursuit of 
education and knowledge, the attached public safety standard is made available to promote the 
timely dissemination of this information in an accurate manner to the public. 




Mazdoor Kisan Shakti Sangathan 
"The Right to Information, The Right to Live" 



^^Eti^^tt^n i im^VN^ ^^Ts^^ii ra^g > ^uiKS*g^^ 



IS 15573 (2005, Reaffirmed 2012) 
ICS 71.060.01 




Jawaharlal Nehru 
'Step Out From the Old to the New' 



Polyaluminium Chloride. 



■K^y / 1 juaaaws^fea rs^^TTF^ 



2*S< W I *>S*V2^NK^ 



^frcvvv^ 



Satyanarayan Gangaram Pitroda 
Invent a New India Using Knowledge 



?TR TJ^ ^TT teMHI | ^t ^Tift ^FTT ^f ^TT ^T^?TT \' 

Bhartrhari — Nitisatakam 
"Knowledge is such a treasure which cannot be stolen" 




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• 




IS 15573: 2005 

REAFFIRMED 

Indian Standard 
POLYALUMINIUM CHLORIDE 



ICS 71.060.01 



© BIS 2005 

BUREAU OF INDIAN STANDARDS 

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG 
NEW DELHI 110002 



^"7 2005 Price Group 7 



Water Quality Sectional Committee, CHD 13 



FOREWORD 

oSi^ an t Stan . d ? d W3S ad °J*f u ^ thC BUre3U ° f Indian Standards ' after the draft finalized by the Water 
Quality Sectional Comm.ttee had been approved by the Chemical Division Council. 

Improvement in the quality of potable water supply is a thrust area of all municipal and Public Health Engineering 

for most To T 7 7 Pp]y 7T S - M Pa,t ° f thlS qUCSt t0 impr ° Ve the ^^ 0f water -PP'^, therel a n d 
tor most cost effective and efficient water treatment chemicals. 

Polyaluminium chloride is an effective coagulant used to remove microscopic suspended matter quickly over a 
«movTal£ temPeratUre ^^ " enC ° Untered " natUral "^ WatCrS ' U " ^ > effec ^ 

Polyaluminium chloride (PAC) is a general name given to polyaluminium chloride compounds namely 

of"w ILT ? \t ^ dr °r ide and P 'y aluminium ch! °ride Mroxide su.phate, general chemica form 2 
ot which is mentioned below alongwith CAS No: 



Chemical Formula 

C A1 (OH) a Cl b ] n a = 2.5, b = 0.5 

(«~15) o = 2,i=l 



CAS No: 

12042-91-0 

10284-64-7 

a and b variable 1327-41-9 

(a>1.05) 



[Al(OH) a Cl b (S0 4 ) c ] n a , b and c variable 

( "- 15) ^1-05 39290-78-3 

Polyaluminium chloride is to be manufactured from virgin raw materials so that it is safe for drinking water. 
The composition of Committee responsible for formulation of this standard is given in Annex S. 
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value 
observedorcalculatedexpre S s,ngth e resultof a test or analysis, shall be roundedoffin accordance with IS 2 ■ 1960 
Rules for roundmg off numerical values (revised)'. The number of significant places retained in the rounded off 
value should be the same as that of the specified value in this standard. 



AMENDMENT NO. 1 JULY 2007 

TO 

IS 15573 : 2005 POLY ALUMINIUM CHLORIDE 

(Page 1, clause 2, Title of IS 3506) — Substitute the following for the 
existing: 

'Tables for alcoholometry (Pyknometer method) (first revision)". 

(Page 3, clause A-l .3.2, fourth line) — Substitute the following for the 
existing: 

c to cool and add 20 ml of M/20 EDTA solution exactly 5 

(Page 3, clause A-l. 3. 5, third line) — Substitute the following for the 
existing: 

'solution turns from pale yellow colour to pale red'. 

(Page j, clause A-l. 3.6, first line) — ■ Substitute the following for the 
existing: 

l In parallel, pipette out 20 ml M/20 EDTA/ 

(Page 3, clause A-2, fifth line) — Substitute the following for the existing: 

'A = percent aluminium as aluminium oxide;' 



(CHD 13) 



Reprography Unit, BIS, New Delhi, India 



IS 15573 : 2005 



Indian Standard 
POLYALUMINIUM CHLORIDE 



1 SCOPE 

This standard prescribes the characteristics, 
requirements, and methods of sampling and test for 
polyaluminium chloride liquid and powder. 

2 REFERENCES 

The following standards contain provisions which 
through reference in this text, constitute provisions of 
this standard. At the time of publication, the editions 
indicated were valid. All standards are subject to 
revision and parties to agreements based on this 
standard are encouraged to investigate the possibility 
of applying the most recent editions of the standards 
indicated below: 



IS No. 

265 : 1993 
1070: 1992 
2088 : 1983 

3025 : 1964 



3025 



(Part 37): 1988 
(Part 41): 1992 
(Part 47): 1994 
(Part 48): 1994 
(Part 52) : 2003 
(Part 53) : 2003 
3506:1989 



4905 : 1968 
6213 (Part 4): 

1971 
9316 (Part 2): 

1987 



3 GRADES 



Title 

Hydrochloric acid (fourth revision) 

Reagent grade water (third revision) 

Methods for determination of 

arsenic (second revision) 

Methods of sampling and test 

(physical and chemical) for water 

used in industry 

Methods of sampling and test 

(physical and chemical) for water 

and wastewater: 

Arsenic (first revision) 

Cadmium (first revision) 

Lead (first revision) 

Mercury (first revision) 

Chromium (first revision) 

Iron (first revision) 

Tables for acoholometry 

(Pyknometer method) (first 

revision) 

Methods for random sampling 

Method of test for pulp: Part 4 

Determination of viscosity of pulp 

Method of test for rubber latex: 

Part 2 Determination of viscosity 

(RL : 2) (first revision) 



The material shall be in the form of liquid or powder, 
each of two types : (a) Medium basicity, and (b) High 
basicity, both grades are effective coagulant for the 
treatment of low to high turbidity surface raw water 
for drinking purposes. 



4 REQUIREMENTS 

4.1 Description 

4.1.1 For Liquid 

Polyaluminium chloride shall be colourless to pale 
yellow, hazy to transparent liquid, and shall be free 
from organic contaminants. 

4.1.2 For Powder 

Polyaluminium chloride powder shall be in the form 
of pale yellow powder and shall be free from organic 
contaminants. 

4.2 The material shall also comply with the requirements 
specified in Table 1, when tested by methods specified 
in col 7 and 8 of Table 1. The quantity of the sample 
taken for various tests is for liquid material product. 
For powder material product it shall be one-third of 
the quantity of liquid material taken for tests. Unless 
specified otherwise, pure chemicals and distilled water 
(see IS 1070) shall be used in tests. 

5 PACKING, MARKING AND STORAGE 

5.1 Packing 

The liquid material shall be packed or transported in 
acid resistant rubber or plastic lined containers, tankers 
or tank car. The powder material shall be packed in 
laminated HDPE bags with inner polyethylene liner/ 
liners, or as agreed to between the purchaser and the 
supplier. Polyaluminum chloride powder absorbs 
moisture when exposed to atmosphere. 

5.2 Marking 

The containers shall bear legibly and indelibly the 
following information: 

a) Name and grade of the material; 

b) Name of the manufacturer and trade-mark, 
if any; 

c) Mass of the material in package or tanker; 

d) Date of manufacture; and 

e) Batch No./Lot No. 

5.2.1 If the material is supplied in bulk, a card bearing 
all the information required as mentioned in 5.2 shall 
be placed with the supply, 

5.2.2 The container shall also be marked with the 
following information. Corrosive liquid, irritating to 



1 



IS 15573: 2005 



SI 

No. 



(1) 



Table 1 Requirements for Polyaluminium Chloride 

(Clause 4.2) 



Characteristic 



(2) 



i) Aluminium as A1 2 3 , percent by 

mass, Min 
ii) Basicity, percent by mass, Min 

iii) Chloride as Ci~, percent by mass, 

Max 
iv) Sulphate as S<V, percent by mass, 

Max 
v) Specific gravity at 25°C, Min 

vi) Viscosity (dynamic) at 20°C 

vii) Bulk density, gm/ml, Min 
viii) l} Toxic substances, ppm, Max 

1) Mercury (as Hg) 

2) Arsenic (as As) 

3) Cadmium (as Cd) 

4) Lead (as Pb) 

5) Iron (as Fe) and 
Manganese (as Mn) 

6) Chromium (as Cr) 

ix) Insolubles, percent by mass, Max 

x) pH of 5 percent solution, w/v 





Requirement 




Method of 


Test 


^ Liquic 


1 


Powder ^ 




Medium 

Basicity 

PAC 


High " r 
Basicity 
PAC 


Medium 

Basicity 

PAC 


High 

Basicity 

PAC 


"^ Refto 
IS No. 


Refto 
Annex 


(3) 


(4) 


(5) 


(6) 


(7) 


(8) 


9.5 


10.2 


28.0 


28.0 


— 


A 


35 


64 


35 


64 


— 


B 


12.5 


10.5 


33.0 


31.0 


— 


C 


2.7 


2.5 


10.0 


10.0 


— 


D 


1.16 


1.18 


NA 


NA 


— 


E 


3-30 mPa 


3-30 mPa 


NA 
0.65 


NA 
0.65 


93 16 (Part 2) 
6213 (Part 4) 


F 


0.2 

5 

6 

30 
100 


0.2 

5 

6 

30 
100 


0.6 
15 
18 
90 

300 


0.6 
15 
18 
90 

300 




G 
H 

J 
K 

L andM 


15 


15 


45 


45 




N 


0.5 


0.5 


1.50 


1.50 


— 


P 



1.8-4.5 



2.5-4.5 



2.5-4.5 



2.5-4.5 



» Manufacturer must do routine testing of arsenic, iron, cadmium, manganese and chromium once in a month and whenever raw 
material composition is changed, to ensure that PAC manufactured conforms to prescribed limit. Mercury and lead are to be 
analyzed in each batch. 



eyes; in case of contact, rinse immediately with plenty 
of water and seek medical advice. On contact with skin, 
wash immediately with plenty of water, immediately 
take off all the contaminated clothing. Wear suitable 
gloves and eyes/face protection, while handling the 
material. 

5.2.3 BIS Certification Marking 

The packages may also be marked with the Standard 
Mark. 

5.2.3.1 The use of the Standard Mark is governed by 
the provisions of Bureau of Indian Standards Act, 1986 
and the Rules and Regulations made thereunder. The 
details of conditions under which the licence for the 



use the of the Standard Mark may be granted to 
manufacturers or producers may be obtained from the 
Bureau of Indian Standards. 

5.3 Storage 

The material shall be stored in dark colour acid proof 
rubber/FRP lined tanks under shade (to avoid direct 
sunlight). 

6 SAMPLING 

Representative samples of the material shall be drawn 
and their conformity to this standard shall be 
determined in accordance with method prescribed in 
Annex R. 



IS 15573: 2005 



ANNEX A 

[Table \ 9 SI No. (i)] 
DETERMINATION OF ALUMINIUM OXIDE 



A! PRINCIPLE 

Total aluminium in sample solution is converted to Al 3+ 
ions by addition of dilute nitric acid and heating, 
followed by complexation of AI 3+ with an excess of 
ethylenediamine tetra acetic acid disodium (EDTA) 
solution. Excess EDTA is titrated with a standard 
volumetric solution of zinc in the presence of xylenol 
orange as indicator. 

AP+EDTA 4 " -» AlEDTA" 



Zn 2+ +EDTA 4 " 



Zn EDTA 2 ~ 



A- 1.2 Reagents 

A-l.2.1 Nitric Acid (\ : 12) 

A-1.2.2.A//20 EDTA — Dissolve about 19 g of 
ethylenediamine tetra acetic acid disodium salt 
dihydrate in distilled water, transfer to a 1 000 ml 
volumetric flask and make up to the mark by distilled 
water and shake well. 

A-l. 2.3 Sodium Acetate Buffer Solution — Dissolve 
272 g of sodium acetate trihydrate in water and dilute 
to 1 litre. 

A- 1.2. 4 Xylenol Indicator Orange — (a) Solution, 0. 1 
percent (w/v) — Dissolve 0.1 g of xylenol orange 
powder in about 70 ml water, shake and make up to 
100 ml. Shake well, (b) Powder, xylenol orange 
mixture (1 percent w/w in potassium nitrate) : Grind 
1 .0 g of xylenol orange with 99 g of potassium nitrate 
in a mortar until a homogeneous material is obtained. 

A- 1.2.5 Hydrochloric Acid— AR grade (see IS 265). 

A-l .2.6 M/50 Zinc Solution — Weigh accurately about 
1 .308 g of AR grade zinc metal pellets/granule, transfer 
to a 250 ml beaker, add small amount of water and 
6-7 ml of concentrated hydrochloric acid AR, heat to 
dissolve zinc, evaporate on a water bath nearly to 
dryness, dissolve the residue in water, transfer the 
contents quantitatively to a 1 000 ml volumetric flask 
and make up to the mark. 



Molarity of zinc solution, M - 



m 



65.37 



where 



morality of zinc solution, and 

mass of zinc metal taken for preparation of 
solution. 



A- 1.3 Procedure 

A-l. 3.1 Weigh accurately, to the nearest 1 mg, for 
powder about 2.5 g, for liquid about 7 g, of the test 
sample in a weighing bottle. Transfer it quantitatively 
to a 500 ml volumetric flask with aid of about 150 ml 
water dissolve by shaking and make up to mark. 

A-l. 3.2 Pipette out accurately 20 ml of this solution to 
a 250 ml conical flask add 2 ml of nitric acid, 1:12 (the 
pW value shall be between 1 to 2), boil for 1 min, allow 
to cool and add 20 ml of M / 50 EDTA solution exactly 
by pipette. 

A-l.3.3 Adjust to pW 3 with nitric acid or 10 percent 
sodium hydroxide solution using pH meter or by 
thymol blue /?H test paper. Boil for about 2 min. 

A-l.3.4 Cool and add approximately 10 ml sodium 
acetate buffer solution (pU of mixture should be 
between 5 and 6) add 2 to 5 drops of xylenol orange 
solution (0.1 percent w/v) or add 30-50 mg 1 percent 
w/w xylenol orange mixture in potassium nitrate. 

A-l. 3.5 Titrate the solution with M/50 zinc solution, 
making the end point the time when the colour of the 
solution turns from pink colour to pale red. 

A-l. 3.6 In parallel, pipette out 20 ml M/50 EDTA, 
add 2 ml of nitric acid (1:12) solution to a 250 ml 
conical flask, add about 20 ml distilled water 
and proceed the blank test as described in A-l.3.3 to 
A-l .3.5. 



A-2 CALCULATION 

Percent aluminium as 
aluminium oxide (A1 2 3 ), A = 

fflASxM^d-a) 



5.1xAf,(rf-fl) 
20 5/500 



where 
A 



S = 



percent aluminium as aluminium chloride 

(ai 2 o 3 ); 

molarity of standard zinc solution; 

titre of standard zinc solution used in blank 

determination (see A-l.3.6), in ml; 

titre of standard zinc solution used for 

sample solution, in ml; and 

sample taken for test, in g. 



IS 15573 : 2005 



ANNEXE 
[Table I, SI No. (ii)] 

DETERMINATION OF BASICITY 



B-l PRINCIPLE 

Sample solution is depolymerized by heating in acidic 
medium. Potassium fluoride is added to complex 
aluminium. Excess of acid is titrated with standard 
alkali using phenolphthalein as an indicator. 

B-l.l Reagents 

B-l. 1.1 Potassium Fluoride Solution (50 percent w/v) 
— Dissolve 250 g potassium fluoride anhydride in 
water to 500 ml and filter through a filter paper. 

B-l. 1.2 Non-carbonic Water — Boil redistilled water, 
remove carbonic acid gas and volatile components and 
allow to cool to ordinary temperature, preventing from 
the absorption of carbonic acid gas in the air. 

B-l. 1.3 Ethyl Alcohol Solution of Methyl Red — 
bromocresol green — Dissolve 0.02 g of methyl red 
and 0.1 g of bromocresol green in 100 ml ethyl alcohol 
(95 percent w/v). 

B-l. 1.4 Ethyl Alcohol Solution of Phenolphthalein 
(0.5 percent w/v) — Dissolve 0.5 g of phenolphthalein 
in 100 ml of ethyl alcohol (50 percent v/v), add sodium 
hydroxide solution (N/50) drop by drop until the colour 
of the solution turns slightly pink. 

B-l. 1.5 Sodium Carbonate (Anhydrous) — AR grade. 

B-l. 1.6 Sodium Hydroxide — AR grade. 

B-l. 1.7 Hydrochloric Acid Solution (Nil) — Transfer 
40 to 45 ml cone hydrochloric acid (AR grade) to a 
1 000 ml volumetric flask and make upto the mark with 
distilled water, shake well and standardize this solution 
as follows. 

B-l. 1.7.1 Standardization — Sodium carbonate 
(anhydrous) of 99.9 percent purity contains a little 
moisture, which is to be dehydrated by heating at 
260-270°C for half an hour and allow to cool in 
desiccators before use. Weigh out accurately from a 
weighing bottle about 0.5 to 0.7 g of sodium carbonate 
into a 250 ml conical flask. Dissolve it in 20 ml 
distilled water and add some drops of methyl red — 
bromocresol green, titrate with hydrochloric acid 
making the end point the time when colour of solution 
turns from blue to purplish red. Calculate normality 
of HC1 as follows: 



where 

N A - normality of hydrochloric acid solution; 
w = mass of sodium carbonate taken, in g; and 
d = titre of Nil hydrochloric acid solution, in 
ml. 

B-l.l.S Sodium Hydroxide Solution (N/2)— Add about 
100 g of sodium hydroxide gradually in 250 ml conical 
flask with about 100 ml of water, with care of 
generating heat, allow to dissolve with agitating by 
glass rod, prepare the saturated solution, allow to stand 
till over night with stopper, and dilute about 20 ml of 
supernatant liquid with non-carbonic acid water to 
1 000 ml. Standardize this solution as follows. 

B-l. 1.8 .1 Standardization — Pipette out exactly 25 ml 
of hydrochloric acid (N/2) to a conical flask, and after 
adding 2 to 3 drops' of ethyl alcohol solution 
(0.5 percent w/v) of phenolphthalein, titrate it with 
sodium hydroxide solution, and making the end point 
to time when the colour of the solution turns to pink. 
Normality of sodium hydroxide solution is given as 
below: 

Calculation 



#« = 



25x;V A 



N A = 



1000w 

dxS3 



where 

N Q = normality of sodium hydroxide solution; 

N A = normality of hydrochloric acid solution; 
and 

V = titre of N/2 sodium hydroxide solution, in 
ml. 

B-1.2 Procedure 

B-l.2.1 Weigh about 2 g of the liquid/solid sample in 
a beaker accurately to the nearest 1 mg and transfer 
with 20-30 ml of water to a 250 ml conical flask. 

B-l.2.2 Pipette out precisely 25 ml of hydrochloric 
acid solution (Nil) and add to the sample, cover with a 
watch glass, after heating for 10 min on a water bath, 
cool to room temperature and add at once 25 ml of 
potassium fluoride solution (50 percent w/v). 

B-l.2.3 Add about 5 drops of ethyl alcohol solution 
(0.5 percent w/v) of phenolphthalein, and immediately 
titrate with N/2 sodium hydroxide solution, making the 



IS 15573: 2005 



end point the time when the colour of the solution turns 
to pink. 

B-l .2.4 In parallel, pipette out 25 ml water to a 250 ml 
conical flask and proceed as given in B-l. 2. 2 
and B-l.2.3. 

B-l. 3 Calculation 

Relative basicity, B in terms of moles of OH" per three 
moles of aluminium in percent is given by following 
equation: 



\0xM 



26.98x100 

17x3x0.5293x^ 



169.9x7V B x(7 2 -^) 
MxA 



where 
B 



17 
M 
A 

0.529 3 
26.98 



= basicity, percent by mass; 

'= titre of N/2 sodium hydroxide solution 

consumed in sample in ml; 
= titre of N/2 sodium hydroxide solution 

consumed in blank (see B-1.2.4); 
= normality of sodium hydroxide solution 

used; 
= gram equivalent of hydroxy 1 group; 
= mass, of sample taken for test, in gram; 
= percent of aluminium oxide obtained 

in A-2; 
= conversion factor of aluminium in 

aluminium oxide; and 
= gram equivalent of aluminium. 



ANNEX C 
[Table I, SI No. (Hi)] 

DETERMINATION OF CHLORIDE 



C-l PRINCIPLE 

Acidified sample solution is titrated with standard 
mercuric nitrate solution using mixed 
diphenylcarbazone and bromophenol blue indicator. 
The end point is shown by the formation of the blue- 
violet mercury diphenylcarbazone complex. 

C-l.l Reagents 

C-l. 1.1 Nitric Acid — Mix 3 volumes of concentrated, 
nitric acid (sp.gr. 1.42) with 997 volumes of distilled 
water. 

C-l . 1.2 Mixed Indicator Solution — Dissolve 0.5 g of 
crystalline diphenylcarbazone and 0.5 g of 
bromophenol, blue powder in 100 ml of methyl alcohol 
(95 percent). Store in a brown bottle and replace after 
every 6 months. 

C-l. 1.3 Standard Sodium Chloride Solution (0.1 TV) 
— Weigh accurately about 5.844 g (wg) of sodium 
chloride (previously dried at 105°C for 2 h and cooled 
in desicator), transfer to 1 000 ml volumetric flask with 
the help of distilled water and make up to the mark 
with distilled water. 

w 
Normality of sodium chloride solution, n = 

C-l. 1.4 Mercuric Nitrate Solutionis. 1 N)— Dissolve 
17.130 g of mercuric nitrate monohydrate in 50 ml of 



water acidified with 1 ml of concentrated nitric acid 
(sp. gr. 1.42). Dilute the acidified mercuric nitrate 
solution with distilled water to 1 litre. 

C-l. 1.5 Standardization of Mercuric Nitrate Solution 

(0.1 AO — Take 25 ml of standard 0.1 N sodium 

chloride solution in a 250 ml conical flask, dilute with 

distilled water, add 5 to 10 drops of mixed indicator 

solution, add 2 to 3 drops of dilute nitric acid (3 : 997) 

and titrate it with 0.1 N mercuric nitrate solution till 

colour turns from yellow to blue violet. 

25/7 
Normality of mercuric nitrate solution, N= —— 



where 

AT 
n 



normality of mercuric nitrate solution; 

normality of standard sodium chloride 

solution; and 

volume of mercuric nitrate solution, in 

ml 



C-l. 2 Procedure 

Weigh accurately about Mg (for liquid 5g, solid 1 .7g) 
of the sample in a 100 ml beaker and dissolve it in 
approximately 30 ml of water, transfer it to a 500 ml 
volumetric flask, and dilute with water and make up 
to the mark. Shake well. Pipette out 25 ml of this 
solution in to a 300 ml Erlenmeyer flask and dilute 



IS 15573 : 2005 



with water to 50 ml. Add 5-10 drops of mixed indicator 
solution and shake the flask. If a blue violet or red 
colour develops, add nitric acid (3 : 997) drop-wise 
until the colour changes to yellow. Add 1 ml of excess 
acid. Titrate the solution against standard 0.1 N 
mercuric nitrate solution, until the colour of solution 
turns to blue-violet. Record the volume (say Vm\) of 
mercuric nitrate solution used in titration. 



C-1.3 Calculation 

Chloride percent ; 
where 



Fx7Vx35.46x2 
M 



V = volume (ml) of mercuric nitrate solution 

used in titration; 
N = normality of mercuric nitrate solution; and 
M = mass of the material taken for test, in g. 



ANNEX D 

[Table I, SI No. (iv)] 
DETERMINATION OF SULPHATE 



D-l PRINCIPLE 

Sulphate in solution is determined gravimetrically by 
precipitation as barium sulphate in acidic medium. 

D-l.l Reagents 

D-1 .1 .1 Hydrochloric Acid Solution — Approximately 

4N. 

D-l. 1.2 Barium Chloride Solution — 10 percent, w/v. 

D-l. 2 Procedure 

Weigh accurately Mg (for liquid about 10 g, for solid 
about 2.5 g) of the sample and transfer to a 250 ml 
beaker and dissolve in about 100 ml of water. Adjust 
the p\\ to 2.0-2.5 by drop-wise addition of the 
hydrochloric acid and heat to boil. Add to the boiling 
solution 10-12 ml of barium chloride solution drop by 



drop so that the addition is in slight excess and continue 
boiling for 4 min to obtain a granular precipitate. Allow 
to stand for 4 h and filter through a weighed sintered 
glass crucible G-4. Wash the precipitate repeatedly with 
hot water (at 60-70°C) until the filtrate is chloride free 
on testing with silver nitrate solution. Dry to constant 
mass at 105-110°C and weigh. 



D-1.3 Calculation 



Percent sulphate (as S0 4 ) : 



(M 2 -A/ t ) 41.154 

M ' 



where 



M } =. mass of empty crucible, in g; 

M 2 = mass of crucible with BaS0 4 , in g; and 

M = mass of sample taken, in g. 



ANNEX E 

[Table 1 9 SI No. (y)] 
DETERMINATION OF SPECIFIC GRAVITY 



E-l OUTLINE OF THE METHOD 

Specific gravity at 25°C temperature by specific gravity 
hydrometer, in case of dispute, specific gravity shall 
be determined by Pyknometer method as per IS 3506. 

E-1.1 Apparatus 

£-1.1.1 Specific Gravity Hydrometer — The hydrometer 
shall be of scale range 1.1-1.3 (effective scale range 
1.150to 1.250). 

E-l. 1.2 Cylinder — The cylinder shall be made of 



glass, having no distortion which may disturb the 
reading of hydrometer and its size shall be such that 
when the hydrometer is floated in the cylinder, the 
distance between any part of the hydrometer and the 
inner wall or the bottom surface of cylinder shall be 
not less than 1 cm. 



E-l. 1.3 Thermometer — 
shall be of scale range - 



Glass mercurial thermometer 
-10 to 110°C. 



E-l. 2 Procedure 

Thoroughly cleaned hydrometer and cylinder before 



IS 15573 : 2005 



use so as to show the clear meniscus. Proper amount 
of sample shall be transferred into the cylinder and 
kept at 25°C. After mixing sample completely with an 
agitating rod, pick up the upper end of the hydrometer, 
float it on the liquid gently so as it does not adhere any 
bubbles. After standing quietly, push down and sink it 
approximately 2 scale marks in the sample and release. 
After the hydrometer has stopped perfectly, read the 



scale adopting upper edge of the meniscus. Repeat this 
measurement 2 to 3 times and the average value of the 
readings gives the specific gravity of the liquid. 

NOTES 

1 Differences between the measured value of 2 to 3 times and 
the average value shall not be more than the value which 
corresponds to one scale interval. 

2 Fans, etc, should be avoided in surrounding area of the 
specific gravity determination. 



ANNEX F 

[Table 1, SI No. Xvii)] 

BULK DENSITY 



F-l PRINCIPLE 

Measured amount of powder sample is weighed and 
expressed weight per unit volume. 

F-l.l Apparatus 

F-l. 1.1 Rubber Base Pad 

F-l. 1.2 Funnel — Glass funnel of 12.5 mm diameter. 

F-l. 1.3 Cylinder— 100 ml measuring glass cylinder, 
with stopper. 

F-l. 2 Procedure 

Weigh accurately sufficient sample required to fill 
measuring cylinder up to 100 ml mark. Slip the 
weighed sample gently and smoothly through a funnel 
in measuring cylinder (without knocking or squeezing). 
Stopper the cylinder properly. With the thumb and 



fingers of one hand, gently grasp the upper portion of 
the cylinder and lift it as far as 50 mm height and let it 
drop on rubber base pad. Continue lifting and dropping 
until 50 complete drops have been given to the cylinder. 
As soon as 50 drops are completed, raise the cylinder 
to eye level and level the cylinder with the material 
without further knocking and read the volume of 
material. 

F-1.3 Calculation 

M 
Bulk density, g/ml = — 



where 



M — mass of the material taken for the test, in g; 
and 

V = volume of the material in cylinder after 50 
taps, in ml. 



ANNEX G 
[Table I, SI No. (vm)] 

DETERMINATION OF MERCURY 



G-l MERCURY ANALYZER METHOD 

G-1.0 Outline of the Method 

Mercury analyzer works on the principle of cold vapour 
atomic absorption spectrometry technique. Mercury 
ions are reduced to elemental state by stannous chloride 
and the solution is stirred vigorously so that an 
equilibrium is achieved between the mercury in the 
solution and air phase. The vapour is then purged into 
the absorption which is located in the light path of 
spectrometer. 



As the cold vapour absorption technique of mercury is 
based on absorption of UV radiation by mercury atoms, 
all substances which absorb UV radiation will cause 
the positive error. Vapours of organic compounds like 
alcohols, ketones, esters and acids and water also 
absorb UV radiation. These can be avoided with 
suitable traps provided along with the instrument. 

G-l.l Apparatus 

G-l. 1.1 Mercury Analyzer — Based on cold vapour 
atomic absorption spectrometry technique. 



IS 15573: 2005 



G-l. 2 Reagents 

G-l. 2.1 Nitric Acid — 10 percent, 5 percent and 
2 percent v/v. 

G-l .2.2 Concentrated Hydrochloric Acid 

G-l. 2.3 Stannous Chloride — 20 percent (w/v) in 
10 percent hydrochloric acid (v/v). Take 20 g stannous 
chloride in a clean beaker, add 10 ml of concentrated 
hydrochloric acid and dissolve while warming it over 
a hot plate. Boil for one minute, cool and dilute with 
distilled water to make 100 ml. Add 1-2 g of tin metal 
(pellet) after the preparation of the solution. 

G-l. 2.4 Potassium Permanganate — 4 percent (w/v) 
in 10 percent sulphuric acid — Dissolve 20 g of 
potassium permanganate in water and add carefully 
50 ml of concentrated sulphuric acid. Make up a 
volume 500 ml using water. 

G-l. 2.5 Hydroxylamine Hydrochloride — 10 percent 

(w/v). 

G-l. 2.6 Mercuric Chloride — AR grade. 
G-l.2.7 Potassium Dichromate — 1 percent (w/v). 

G-1.3 Preparation of Standard Graph 

G-l.3.1 Preparation of Stock Solution 

Dissolve 0.135 4 g of mercuric chloride AR grade in 
25 ml of 2 percent nitric acid (v/v). Add 1 ml of 
potassium dichromate solution of 1 percent (w/v) and 
make up to 100 ml with 2 percent nitric acid (v/v). 
1 ml of this stock solution = 1 mg of Hg. 

G-l.3.2 Preparation of Standard Solution 

Dilute 10 ml of the above stock solution (see G-l.3.1) 
to 1 000 ml in a volumetric flask, 1 ml of this solution, 
5=10 microgram of Hg. Further pipette 10 ml of this 
solution B (1 ml = 10 microgram) to 1 000 ml, which 
will contain 1 ml = 0.1 microgram/100 nanogram of 
Hg, keeping 5 percent nitric acid (v/v) and 0. 10 percent 
potassium dichromate (w/v) concentration. This 
standard solution is generally stable for a period of at 
least a month. 
G-l. 3.3 Procedure for Standard Graph 

By using the standard solution find out the optical 
density/absorbance for 10, 20, 40, 60, 80, 100, 120, 140, 
1 50, nanograms of mercury. By following the procedure 
described below, plot a standard curve indicating 
mercury in nanograms against optical density. 



G-1.3 .4 Blank Preparation 

Transfer 8 ml of 10 percent nitric acid solution and 
2 ml of stannous chloride solution to the reaction 
vessel. Stir it for 5 min. Stop the stirring and take the 
reading for the mercury content, if any in the blank, 
repeat the stirring of the blank solution until no 
deflection/reading is observed. Take various readings 
for the various known concentration of mercury in the 
aliquots and prepare the graph. 

G-l. 4 Procedure 

Weigh accurately about 5 g of the liquid sample (or 
1.7 g of solid sample) in a 50 ml beaker, dissolve 
the sample in 25 ml distilled water and transfer to a 
250 ml volumetric flask with the help of more 
distilled water. Add drop-wise potassium 
permanganate 4 percent (w/v) till purple colour 
remains, shake well and add 2-3 drops of 
concentrated nitric acid, mix thoroughly and keep 
it for 5-10 min. Decolourize the solution by adding 
drop-wise hydroxylamine hydrochloride solution, 
shake well and make up to the mark with distilled 
water. Prepare a fresh blank (see G-l. 3.4), stir it for 
5 min, stop the stirring take reading for the mercury 
content if any in the blank. Transfer 5 ml of the 
sample solution to the reaction vessel containing 
blank and determine the concentration of the 
mercury with the help of the standard graph (see 
G-l. 3.3). Prepare a blank solution using all reagents 
in same quantities except sample in a 250 ml 
volumetric flask, use distilled water in place of 
sample. Make up to mark with distilled water and 
shake well. Transfer 5 ml of this solution to reaction 
vessel containing blank in the same way as sample 
and calculate mercury content and subtract from 
sample result, and take for calculation of mercury 
content in sample. 



G-1.5 Calculation 



Mercury 

(as Hg), ppm : 



mg of the mercury as Hg 
in 5 ml sample x 50 * 1 000 

Mass of the sample taken 
for the test, in g 



G-2 ALTERNATE METHOD 

Determine Mercury content by atomic absorption 
spectrophotometer with suitable attachment of metal 
hydride system as prescribed in IS 3025 (Part 48). 



IS 15573 : 2005 



ANNEX H 

[Table l, SI No. (win)] 
DETERMINATION OF ARSENIC 



H-l PRINCIPLE 

Arsenic is determined by Gutzeit method or by atomic 
absorption spectrophotometer, this being referee 
method. 

H-l.l Procedure 

Dissolve 1 g of liquid material (0.33 g of solid material) 
in the minimum amount of water. Carry out test for 
arsenic as prescribed in IS 2088 using for comparison 



a stain obtained with 0.005 mg of arsenic (as As) 
[0.009 8 mg of arsenic trioxide as As ? 3 ]. 

H-1.2 The limit prescribed in Table 1 shall be taken as 
not having been exceeded, if the length and intensity 
of the stain is not greater than that produced in the 
control sample. 

H-2 REFEREE METHOD 

By Atomic Absorption Spectrophotometer (AAS), 
follow the method as prescribed in IS 3025 (Part 37). 



ANNEX J 

[Table I, SI No. (mil)] 

DETERMINATION OF CADMIUM 

J-l Follow the method by AAS as prescribed in IS 3025 (Part 41). 



ANNEX K 

[Table!, SI No. (vrn)] 

DETERMINATION OF LEAD 



K-l DETERMINATION OF LEAD (As Pb) 

K-l.l Principle 

Lead is determined by comparing the colour produced 
by the material with hydrogen sulphide against that 
produced by a standard lead solution. Alternatively 
Lead to be determined by Atomic Absorption 
Spectrophotometer (Referee method). 

K-l. 2 Apparatus — Nessler cylinder, 100 ml capacity. 

K-l. 3 Reagents 

K-l.3.1 Standard Lead Solution — Dissolve 1.6 g lead 
nitrate in water and make up the volume to 1 000 ml. 
Transfer exactly 10 ml of the solution to volumetric 
flask and dilute it again with distilled water to 1 000 ml 
mark. One millilitre of this solution contains 0.01 mg 
of lead (as Pb). The dilute solution shall be freshly 
prepared. 

K-l.3.2 Acetic Acid — 1 N (approximately). 

K-l. 3.3 Hydrogen Sulphide Gas 



K-L4 Procedure 

Weigh accurately I g of the liquid material (for powder 
0.33 g) and dissolve it in 40 ml of water and transfer to 
a 100 ml Nessler cylinder. Add 5 ml of acetic acid. 
Pass hydrogen sulphide gas into the solution till colour 
develops. Continue the passing of hydrogen sulphide 
gas till further no more colour is developed. In the 
second Nessler cylinder, carry out a control test using 
3 ml of standard lead solution in place of the sample 
and same quantities of the other reagents. Dilute the 
content of each cylinder to 100 ml and shake well. 
Compare the colour produced in the two cylinders. 

K-1.5 The limit prescribed in Table 1 shall be taken as 
not having been exceeded if the intensity of colour 
produced with the material is not greater than that 
produced in the control test. 

K-2 REFEREE METHOD 

Determine Lead content by Atomic Absorption 
Spectrophotometer as per method given in IS 3025 
(Part 47). 



IS 15573 : 2005 



ANNEX L 
[Table 1, SI No. (win)] 

DETERMINATION OF IRON 



L-l PRINCIPLE 

Iron reacts with thiocyanate to give a series of internally 
red coloured compounds, which remain in true 
solution. Strong acids (hydrochloric acid) should be 
present to compress the hydrolysis. Alternatively Iron 
may be determined by Atomic Absorption 
Spectrophotometer (Referee method). 

L-l.l Reagents 

L- 1.1.1 Concentrated Hydrochloric Acid — (35-37 
percent). 

L-l.1.2 Potassium Permanganate Solution — Dissolve 
2 g of potassium permanganate solution in 1 000 ml 
of distilled water. 

L-l.l. 3 Ammonium Thiocyanate Solution — Dissolve 
10 g of ammonium thiocyanate in 100 mi distilled water. 

L-l.l .4 Standard Iron Solution — ( 1 ml = 0. 1 mg Iron) 
— Standard Iron solution prepared with ferrous 
ammonium sulphate hexahydrate [FeS0 4 (NH 4 ) 2 
S0 4 .6H 2 0; Molecular weight 392.14 g]. 

Dissolve 0.702 2 g of AR grade ferrous ammonium 
sulphate hexahydrate in 100 ml of water, add 5 ml of 
dilute sulphuric acid and run in continuously a dilute 
solution of potassium permanganate (2 g/1) until a slight 
pink colour remains after stirring well. Dilute it up to 
1 litre and mix thoroughly; 



LA A. 5 Dilute Sulphuric Acid — 1:5. 

L- .1.2 Procedure 

Weigh accurately to the nearest Mg (about lO.g of 
liquid sample and 3.5 g of solid PAC) in a 100 ml 
beaker, add 5 ml concentrated hydrochloric acid, warm 
it and then cool it to room temperature. Transfer it into 
1 00 ml Nessler cylinder. Take distilled water in another 
Nessler cylinder as a blank. Add 5 ml of cone, 
hydrochloric acid and 3-4 ml of potassium 
permanganate solution, followed by addition of 10 ml 
ammonium thiocyanate to both the cylinders and shake. 
Add distilled water up to the mark. Shake well. Using 
a micro pipette, add standard iron solution (1 ml = 
0. 1 mg Fe) to the blank till colour matches with that of 
sample Nessler cylinder. 



L-1.3 Calculation 



Soluble iron compounds as Fe, ppm = 



V x 100 

M 



where 



V = volume of standard iron solution, in ml; and 
M = mass of sample taken for the test, in g. 

L-2 REFEREE METHOD 

Determine Iron content by Atomic Absorption 
Spetrophotometer method as given in IS 3025 (Part 53). 



ANNEX M 
[Table \, SI No. (viii)] 

DETERMINATION OF MANGANESE 



M-l PRINCIPLE 

Manganese in sample is oxidized to permanganate, 
violet colour of which is compared with standard 
solution of Manganese visually. Alternatively Mn is 
determined by Atomic Absorption Spectrophotometer 
(Referee method). 

M-l.l Apparatus 

M-l. 1.1 Nessler Cylinder, 100 ml capacity. 

M-l. 2 Reagent 

M-l. 2.1 Dilute Nitric Acid— 1 : 1 (v/v). 



M-l.2.2 Dilute Phosphoric Acid— 1 : 1 (v/v). 

M-l. 2.3 Potassium Periodate — AR grade powder. 

M-l. 2. 4 Concentrated Sulphuric Acid — AR grade. 

M-l. 2. 5 Standard Manganese Solution — Dissolve 
0.307 6 g of manganese sulphate monohydrate 
(MnS0 4 .H 2 0) in water, add 1 ml of concentrated 
sulphuric acid, AR grade, and make up the volume 
to 1 000 ml in a volumetric flask. Dilute 10 ml of 
this solution to 1 000 ml. One millilitre of this 
solution is equivalent to 0.001 mg of manganese 
(as Mn). 



IS 15573 : 2005 



M-l. 3 Procedure 

Weigh accurately 1 g of sample and dissolve in 100 ml 
beaker, add 30 ml of water and 5 ml of dilute nitric 
acid, heat to boil. Add 10 ml of dilute phosphoric acid 
and 0.6 to 0.8 g of potassium periodate. Again heat 
the solution to boiling and then boil for 10 min. Cool 
the solution to room temperature. Transfer the solution 
complete to aNessler cylinder, make up the volume to 
100 ml mark. 

M-l. 3.1 Separately carry out a control test using 5 ml 
of standard manganese solution in place of the sample 
and follow the procedure as mentioned above. 

M-l. 3.2 Compare the intensity of colour produced with 
sample (see M-l. 3) with that of produced in the control 
test (see M-l.3.1). Same intensity of colour in both 
solutions indicates Manganese content in sample as 
5 ppm. 

M-l.3.3 If colour intensity in the sample solution is 
higher than the control test Manganese content is 
estimated by diluting suitable quantity of sample 
solution (see M-l. 3) with water to 100 ml for 



comparison. When Fml of sample solution obtained 
in M-l. 3 diluted to 100 ml matches with control test 
solutions obtained in M-l.3.1 Mangenese content is 
given by following equation: 



Mn (ppm) = 



5x100 



V 



M-l. 3. 4 If colour intensity of sample solution 
(see M-l. 3) is less than control test solution 
(see M-l.3.1), dilute suitable quantity (Kml) of control 
test solution to 100 ml so that it matches the colour 
intensity of sample solution obtained in M-l. 3. 
Mangenese content in sample is given in the following 
formula: 



Mn (ppm) - 



M-2 REFEREE METHOD 



5x7 

Too" 



Determine Manganese content by Atomic Absorption 
Spetrophotometer as per method given in IS 3025. 



ANNEX N 

[Table \, SI No. (viii)] 
DETERMINATION OF CHROMIUM 



N-l PRINCIPLE 

Chromium irexavalent is reduced to Chromium 
trivalent by boiling with potassium iodide and sodium 
sulphite and co-precipitated with aluminium hydroxide. 
The aluminium hydroxide is dissolved in 1:1 sulphuric 
acid, and chrominium is oxidized to hexavalent 
form by bromine water. Chromium is determined 
colorimetrically by reacting with diphenyl carbazide 
reagent, which gives a purple colour with chromium. 
Alternatively Chromium is determined by Atomic 
Absorption Spectrophotometer (Referee method). 

N-l.l Reagents 

N-l. 1.1 Sulphuric Acid — 1 : 1 (v/v) and 1 : 9 (v/v). 

N-l. 1.2 Phosphoric Acid — 1 : 5 (v/v). 

N-l. 1.3 Dephenyl Carbazide Reagent — Dissolve 
0.25 g of diphenyl carbazide and 0.4 g of phthalic 
anhydride in 100 ml ethanol. The solution is stable for 
one month. 

N- 1 . 1 .4 Brom ine Water 

N-l. 1.5 Potassium Iodide Solution — 16 percent (w/v). 



N-l. 1.6 Sodium Hydroxide Solution — 30 percent (w/v). 

N-l. 1.7 Neutral Sodium Sulphite Solution 

N-l. 1.8 Potassium Bichromate — AR grade. 

N-l.l .9 Concentrate Hydrochloric Acid — AR grade. 

N-l. 1.10 Aluminium Solution — Dissolve lg of 
aluminium metal in a little quantity of AR grade 
hydrochloric acid and dilute, transfer to 1 000 ml 
volumetric flask and make to the mark with distilled 
water. Shake well. 

N-l. 2 Procedure 

N-l. 2.1 Weigh accurately about 1 g of the liquid (for 
solid about 0.33 g) sample in 100 ml beaker, dissolve 
in water and transfer in 500 ml volumetric flask, make 
up to the mark with water. 

Pipette out 100 ml of sample and transfer it in a 
1 000 ml beaker, add 20 ml of potassium iodide and 
20 ml of sulphuric acid and 100 ml of water. Boil for 
about 10 min. Add sodium sulphite in small portion, 
to decolourize the sample. In case the solution turns 
brown on further boiling, continue adding sodium 



11 



IS 15573: 2005 



sulphite solution till the decolourization is stable and 
brown colour of iodine does not appear on boiling. 
Add sodium hydroxide drop-wise, stir the solution well 
and adjust the pH to 6.0 to 6.5. Allow to settle the 
complete precipitation. Siphon out the clear solution 
and collect the aluminium precipitate in a small beaker. 
Filter through a sintered glass crucible and wash once 
with water. Dissolve the precipitate by pouring 20 ml 
of boiling sulphuric acid (1:9) into the crucible, apply 
suction after 2 to 3 min and again wash with hot water. 
Collect the filtrate in 250 ml beaker. Add 4 ml bromine 
water and stir well. Decolourize the yellow colour with 
a few drops of sodium hydroxide solution and add 
1 ml excess. Boil for 5 min and add 1 : 1 sulphuric 
acid until the brownish colour appears. Add 2 ml of 
the acid in excess and boil again till brownish colour 
disappears. Cool and add 1 ml phosphoric acid. Add 
1 ml diphenyl carbazide solution and make up the 
solution to 100 ml shake well. Wait for 10 to 15 min 
for full colour to develop and then find out the 
percentage transmittance on a spectrophotometer using 
460 nm green filter and calculate the corresponding 
optical density. From the standard graph find out the 
concentration of chromium. 

N-l.2.2 Preparation of Standard Graph 

Weigh 0.283 g of dried potassium dichromate, dissolve 
in a little distilled water and dilute to 1 litre. One 
millilitre of this solution is equivalent to 0.1 mg of 
chromium (as Cr). Further dilute 10 ml of the above 
solution to 1 litre. One millilitre of the diluted solution 



is equivalent to 1 microgram of chromium. Take 
various volumes of the standard solution so as to give 
5, 10, 15, 20 and 25 microgram of chromium. Add 
1 5 ml aluminium solution to each dilute to about 50 ml 
and add 30 ml 1 : 1 sulphuric acid and 2 ml bromine 
water. Further, add 30 percent sodium hydroxide drop- 
wise till the colour disappear and add 2 drops in excess. 
Boil for 5 min and cautiously add 1 : 1 sulphuric acid 
till the bromine colour reappears and add 0.5 ml acid 
in excess. Again boil for about 20 min until bromine 
colour disappears. Check for bromine, cool and add 
1 ml diphenyl carbazide solution and make up the 
volume to 100 ml. Let stand for 15 min and then take 
the reading using 460 nm filter. Find out corresponding 
optical density. For adjusting 100 percent transmittance 
use 50 ml water in place of standard solution and 
proceed in same manner as above. Plot the optical 
densities against the corresponding chromium 
concentrations. 



N-1.3 Calculation 



Chromium (as Cr), ppm = 



Mass in microgram of 
chromium in 100 ml * 5 

Mass of sample taken 
for the test, in g 



N-2 REFEREE METHOD 

Determine Chromium content by Atomic Absorption 
Spectrophotometer as per method given in IS 3025 
(Part 52). 



ANNEX P 

[Table I, SI No. (ix)] 

DETERMINATION OF INSOLUBLE MATTER 



P-l OUTLINE OF THE METHOD 

Insoluble matter is determined by dissolving the 
material in water and filtration through tared Gooch 
or sintered glass crucible G-4. 

P-l.l Procedure 

Weigh accurately about 10 g of the material, transfer 
into a 400 ml beaker, add about 200 ml of freshly 
boiled distilled water, and boil the resulting solution 
for 15 min. Filter any undissolved residue through a 
tared Gooch or sintered glass crucible G-4 and wash 



the residue free from soluble salts with water. Dry the 
crucible along with the residue to constant mass at 
105-1 10°C. 

P-1.2 Calculation 



Insoluble matter, percent by mass 



MjXlOQ 



where 



M l = mass of the residue, in g; and 

M 2 = mass of the material taken for the test, in g. 



12 



IS 15573 : 2005 



ANNEX Q 

[Table I, SI No. (x)] 

DETERMINATION OF/?H 



Q-l OUTLINE OF THE METHOD 



Determination of p\\ of the solution by means of a 
suitable pH meter. 



Q-l.l Procedure 

Q-l.1.1 Take 5 g of the material and dissolve in 1 00 ml 
of freshly boiled and cooled distilled water. Determine 
the/?H of solution by means of a suitable pre-calibrated 
pYL meter, using glass electrode. 



ANNEX R 

{Clause 6) 

SAMPLING OF POLY ALUMINIUM CHLORIDE 



R-l GENERAL REQUIREMENTS OF SAMPLING 

R-1.1 While drawing samples, the following 
precautions and directions shall be observed. 

R-1.2 Sample shall not be taken in an exposed place. 

R-l. 3 The sampling instrument shall be clean and dry. 

R-1.4 Precaution shall be taken to protect the material 
being sampled, the sampling instrument and the 
container for samples from adventitious contamination, 
particularly from absorption of water (that is moisture 
from atmosphere). 

R-l. 5 To draw a representative sample, the content of 
each container selected from sampling shall be mixed 
thoroughly by suitable means. 

R-l. 6 The sample container shall be of such a size that 
these are almost completely filled by the sample. 

R-l. 7 The sample shall be placed in clean, dry and air 
tight glass, PVC or polythene containers. 

R-l. 8 Each sample container shall be sealed air-tight 
after filling, and marked with full details of sampling, 
the date of sampling and batch number, if any. 

R-2 SCALE OF SAMPLING 

R-2.1 Lot 

All the containers in a single consignment of the 
material drawn from a single batch of manufacture shall 
constitute a lot. If a consignment is declared to consist 
of different batches of manufacture, the batches shall 
be marked separately and the groups of containers in 
each batch shall constitute separate lot. 

R-2.2 Samples shall be tested from each lot separately 
for judging the conformity of the material to the 
specific requirements. The number of containers (n) 
to be selected at random from lots at different sizes (N) 
shall be in accordance with Table 2. 



R-2.3 The container/packages shall be drawn at random 
from the lot, and to ensure randomness of sampling 
random number table (see IS 4905) may be used, if it is 
not available then following procedure may be adopted. 

Arrange all the containers in the lot in a systematic 
manner, and starting from any one, count them as 

1, 2 , up to n where n is the integral part of 

Nln. Every nth container thus counted shall be 
included in the sample till the required number of 
containers specified in col 2 of Table 2 is taken 
out. 

Table 2 Number of Containers to be Selected 
for Sampling 

(Clause R-2.2) 



SI 


Lot Size 


Number of Containers 


No. 


N 


to be Selected 

n 

(3) 


(i) 


(2) 


i) 


Up to 25 


3 


ii) 


26 to 50 


4 


iii) 


51 to 100 


5 


iv) 


101 and above 


7 



R-3 TEST SAMPLE AND REFERENCE SAMPLE 

R-3.1 Polyaluminium Chloride — Powder 

Scrap off 50 mm of the material from the top centre and 
then take a sample. The quantity of the material so drawn 
shall be not less than 200 g and the mass of total material 
taken out shall not exceed 1 kg. Mix rapidly all the 
sampled material to constitute the composite sample. 
Divide this composite sample into three parts. One of 
these three sets shall be marked for purchaser, another 
for the supplier and third for the refree. All these three 
samples should have proper label for easy identification. 

R-3.2 Polyaluminium Chloride — Liquid 

From tank cars or tank wagons. 



13 



IS 15573 s 2005 



ANNEX S 

(Foreword) 

COMMITTEE COMPOSITION 

Water Quality Sectional Committee, CHD 13 



Organization 
Bhabha Atomic Research Centre, Mumbai 
All India Institute of Hygiene and Public Health, Kolkata 

Bharat Heavy Electricals Ltd, Tiruchirapalli 

Central Food & Technological Research Institute, Mysore 

Central Ground Water Board, Faridabad 

Central Leather Research Institute, Chennai 
Central Pollution Control Board, Delhi 

Central Pulp and Paper Research Institute, Saharanpur 

Central Salt and Marine Chemical Research Institute, Bhavnagar 

Chembond Drewtreat Ltd, New Delhi 
Chemical Consultants, Chennai 

Consumer Education and Research Centre, Ahmedabad 

Department of Public Health & Preventive Medicine, Chennai 
Department of Industrial Policy and Promotion, New Delhi 
Director General of Health Service (PFA), New Delhi 
Engineers India Ltd, New Delhi 

Grasim Industries Ltd, Nagda 

Hindustan Dorr-Oliver Ltd, New Delhi 

Hindustan Lever Ltd, Mumbai 

Indian Council of Medical Research (ICMR), New Delhi 

Indian Farmers Fertiliser Cooperative Ltd, Allahabad 

Indian Institute of Safety and Environment, Bangalore 

Ion Exchange (I) Ltd, Mumbai 

Maharashtra State Electricity Board, Durgapur 

Ministry of Rural Development, Department of Drinking Water 

Supply, New Delhi 
Ministry of Urban Development & Poverty Alleviation, 

New Delhi 

Mohan Meakin Limited, Ghaziabad 

National Environmental Engineering Research Institute, Nagpur 



Representative (s) 
Dr M. Sudersanan (Chairman) 

Dr P. H. Ananthanarayanan 

Prof Arunabha Majumder (Alternate) 

Dr R. Pattabhiraman 

Director 

Shri M. M. Gaumat 

Dr B. C. Mehta (Alternate) 

Dr Ganga Radhakrishnan 

Dr S. D. Makhijani 

Dr R. C. Trivedi (Alternate) 

Dr A. G. ICulkarnj 

Dr S. Panwar (Alternate) 

Dr P. S. Anand 

Dr S. K. Thampy (Alternate) 

Dr P. Sanyal 

Shri S. Mahadevan 

Shri M. Ravi Krishnan (Alternate) 

Shri S. Yellore 

Shri J. Shishoo (Alternate) 

Shrimati A. Indirani 

Shri V. K. Goel 

Director 

Dr G. Saha 

Shri G. V. Swamy (Alternate) 

Shri Anand Bhandarl 

Shri J. K. Jain (Alternate) 

Shri B. P. Misra 

Shri R. K. Verm a (Alternate) 

Dr Nimish Shah 

Dr G. Raman (Alternate) 

Dr Rakesh Mittal 

Dr H. N. Saiyed (Alternate) 

Shri K. S. S. Moorthy 

Shr) Gorakh Singh (Alternate) 

Dr R. Venkatesan 

Dr S. R. Devadasan (Alternate) 

Representative 

Shri Tulshiram Jagobaji Gaidha 
Shri M. C. Joshi (Alternate) 

Additional Adviser (PHE) 

Shri R. M. Deshpande (Alternate) 

Shri Sukanta Kar 

Dr E. K. Jayanarayanan 

Shri Jitendra Mohan (Alternate) 

Dr M. V. Nanoti 

Dr S. P. Andey (Alternate) 



14 



1815573:2005 



Organization 

National Thermal Power Corporation Ltd, New Delhi 
ONDEO-Nalco India Ltd, Kolkata 

Padarsh Pharmaceuticals Pvt Ltd, Navi Mumbai 

Projects & Development India Ltd, Dhanbad 

Shriram Institute for Industrial Research, Delhi 

The Fertilizer Association of India, New Delhi 
Water and Steam Chemistry Lab, Kalpakkam 
Water Technology Mission, New Delhi 
BIS Directorate General 



Representative (s) 

Shri S, K. Gupta 

Dr Ashis Kumar Samaddar 

Shri R. S. Chakrabarti {Alternate) 

Shri Muneesh Chadda 

Shri S. Y. Pandit (Alternate) 

Shri V. P. Choudhury 

Shri R. K. Vashisht (Alternate) 

Dr V. K. Verma 

Shrimati Manjeet Aggarwal (Alternate) 

Dr (Ms) B. Swaminathan 

Director 

Representative 

Dr U. C Srivastava, Director & Head (CHD) 
[Representing Director General (Ex-officio)] 



Member Secretary 

Dr (Shrimati) Kanchan Anand 

Director (CHD), BIS 



15